package stat

import (
	"bufio"
	"io"
	"strings"
)

type ProcessStat struct {
	User,
	Pid,
	Size,
	Pcpu,
	Pmem,
	Cmd string
}

func (ps *ProcessStat) Command() string {
	return "ps -eo user,pid,size,pcpu,pmem,comm --sort=-pmem c"
}

func (ps *ProcessStat) Parse(r io.Reader) (*[]ProcessStat, error) {
	var (
		psStats = []ProcessStat{}
		scanner = bufio.NewScanner(r)
	)
	scanner.Scan()
	for scanner.Scan() {
		line := scanner.Text()
		parts := strings.Fields(line)
		psStats = append(psStats, ProcessStat{
			User: parts[0],
			Pid:  parts[1],
			Size: parts[2],
			Pcpu: parts[3],
			Pmem: parts[4],
			Cmd:  parts[5],
		})
	}
	return &psStats, scanner.Err()
}